Footnotes

• Collaborators Paediatric Surgery Trainee Research Network (PSTRN): Jonathan J Neville, Rachel Harwood, Emily Decker, Lucinda Tullie, Mary Patrice Eastwood, Georgina Bough, Nigel J Hall.

• Contributors JJN, RH and ED conceived and designed the study. JJN collected and analysed the data. JJN drafted the manuscript. All authors were involved in the critical review and editing of the manuscript.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.